Glass-melting pot.



PATENTED AUG. 21', 1906.

H. C. FRY. GLASS MELTING POT.

APPLICATION FILED PEB. s. 1906.

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HENRY C. FRY, OF ROCHESTER, PENNSYLVANIA.

GLASSr-.NIELTING POT.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application led February 8, 1906. Serial No. 300,069.

To all when@ it may concern.-

Be it known that I, HENRY C. FRY, a citizen of the United States,residing at Rochester, in the county of Beaver and State ofPennsylvania, have invented certain new and useful Improvements inGlassfMelting Pots, of which the following is a specication, referencebeing had therein to the accompanying drawings.

The object of this invention is to provide an improved pot from whichglass may be worked continuously, the fusing and refining processesproceeding in such manner that glass is produced of the finest grade andin the best possible condition for working.

As the pot is completely closed to the furnace in which it is heated,the glass is not contaminated by the furnace gases and products 5 also,with the pot thus closed the gases generated by the fusing processcannot escape into the furnace, thus preserving the brick and otherstructural parts of the furnace from their destructive action.

In the accompanying drawings, Figure l is a longitudinal sectional viewof a glass-melting pot constructed in accordance with the invention.Fig. 2 is a front elevation. Fig. 3 is a vertical cross-sectional viewon line 3 3 of Fig. l.

Referring to the drawings, the main portion of the pot is occupied bythe melting and refining chamber 2, from the front of which the refinedglass is worked, the working-out space being here shown in form ofchamber 3, open at its bottom only to chamber 2 for the entrance of therefined glass, the wall forming said chamber extending around workingopening 4. The pot is of greater length than Width, and the crown 5,curved in cross-section, is of double formation from end to end, and thecavity 6 thus created constitutes a charging and fusing space orchamber, provided at the front and on the exterior of the pot-heatingfurnace with mouth 8, where the glass-forming materials enter, and atits rear end with openings 7, through which the wholly and partiallyfused materials discharge into main chamber 2. The crown slopes fromfront to rear, the inclination being sufficient to cause the materialsto pass by gravity through chamber 6 and into chamber 2.

The charging and fusing chamber 6 is wholly above the metal line orlevel of the pot and being at the top of the pot is exposed to thegreatest possible degree of heat, so

lthat as the material flows backward, comparatively slowly, throughchamber 6, the

fusing, melting, and refining process is well under way before itreaches chamber 2. It is well known that during the fusing process, andespecially during the first portion thereof, the materials are agitatedquite violently and that such action is quite injurious or at leastdetrimental when communicated to refined glass or glass ready forworking. vWith my improved pot the most violent portion of thisagitation is confined to chamber 6, the melting and fusing being wellunder way before the materials enter chamber 2, wherein the melting andrefining operations are fully completed.

With the charging and fusing chamber above the metal line or level ofthe main portion of the pot the agitation therein is not communicated tochamber 2 nor to the working chamber, as it would be if all the chamberswere in a common plane. The absence of this violent agitation in chamber2, together with the distance traveled by the glass from end to end ofsaid chamber before being worked, results in the production of thefinest and purest possible glass at the point of working.

All portions of the pot interior are closed to the pot-heating furnace,and hence it is impossible for the furnace gases and products to enterand pollute the glass. Conversely, the 'brick and other structural workof the furnace is protected from the destructive action of the gasesgenerated by the fusing and refining process.

I claim* l. A glass-melting pot having a hollow wall above the metalline of the pot to form a charging and fusing chamber, said chamberbeing open only to the pot interior and to the exterior of thepot-heating furnace.

2. A glass-melting pot constructed with a hollow crown above the metalline of the pot to form a charging and fusing chamber, the crown-cavitybeing open only to the pot interior and to the exterior of thepot-heating furnace.

3. A glass-melting pot constructed with a hollow crown to form acharging and fusing chamber, said chamber extending from front to rearof the pot above the metal line'thereof and open at its rear to the potinterior and at its front to the exterior of the pot-heating furnace.

4. A glass-melting pot wholly closed to the IOO IIO

furnace in which it is heated, the pot-crown being hollow above themetal line to form a charging and fusing chamber, said chamber slopingldownwardly from front to rear with its lower rear end communicating withthe pot interior and its front or upper end open to the exterior of thepot-heating furnace.

5. A glass-melting pot having a working chamber in its front and aworking mouth communicating therewith7 a refining-chamber at the rear ofthe working chamber, and a charging and fusing chamber above therefining-chamber and open only thereto and to the exterior of thepot-heating furnace.

6. A glass-melting pot having a working chamber at the front providedwith a working mouth, a refining-chamber at the rear of the workingchamber, and a charging and fusing chamber above and extendinglongitudinally of the pot from front to rear, the

chamber in the front provided with a working mouth, a refining-chamberat the rear of and communicating with the working chamber, the pot-crownbeing hollow from front to rear to form a charging andl fusing chamberwhich at the rear communicates with the refining-chamber and at thefront is open to the exterior of the pot-heating furnace.

In testimony whereof I affix my signature in presence of two witnesses.

HENRY C. FRY. Witnesses:

J. M. NEsBIT, i MARGARET HUGHES. i

